--- old/test/hotspot/jtreg/runtime/appcds/sharedStrings/FlagCombo.java	2018-08-08 12:09:19.262099794 -0700
+++ new/test/hotspot/jtreg/runtime/appcds/sharedStrings/FlagCombo.java	2018-08-08 12:09:18.893064934 -0700
@@ -55,7 +55,7 @@
         SharedStringsUtils.buildJar("HelloString");
 
         SharedStringsUtils.dump(TestCommon.list("HelloString"),
-            "SharedStringsBasic.txt");
+            "SharedStringsBasic.txt", "-Xlog:cds,cds+hashtables");
 
         SharedStringsUtils.runWithArchive("HelloString", "-XX:+UseG1GC");